Manual 1.0

LIH 1600

Acquisition Interface

HEKA Elektronik Phone +49 (0) 6325 / 95 53-0Dr. Schulze GmbH Fax +49 (0) 6325 / 95 53-50Wiesenstrae 71 Web Site http://www.heka.comD-67466 Lambrecht/Pfalz Email sales@heka.comGermany support@heka.com

HEKA Electronics Inc. Phone +1 902 624 060647 Keddy Bridge Road Fax +1 902 624 0310R.R. #2 Web Site http://www.heka.comMahone Bay, NS B0J 2E0 Email nasales@heka.comCanada support@heka.com

HEKA Instruments Inc. Phone +1 866 742 0606 (Toll Free)33 Valley Road Fax +1 508 481 8945Southboro, MA 01772 Web Site http://www.heka.comUSA Email nasales@heka.com

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Title Page: LIH 1600 Acquisition Interface

© 2004 HEKA Elektronik Dr. Schulze GmbH

COMDLH/1

Contents

1 Description of the Hardware 1

2 Technical Specifications 3

2.1 Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.2 “Telegraphing” Inputs . . . . . . . . . . . . . . . . . . . . . 3

2.3 Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.4 Trigger Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.5 Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.6 Digital Outputs . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.7 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.8 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.9 Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.10 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3 Installation 7

3.1 Connecting the Lih 1600 . . . . . . . . . . . . . . . . . . . . 7

3.2 Software Installation . . . . . . . . . . . . . . . . . . . . . . 9

3.2.1 Windows NT 4.0, Windows 2000, and Windows XP 9

3.2.2 Windows 98 . . . . . . . . . . . . . . . . . . . . . . . 10

3.2.3 MacOS 9.x . . . . . . . . . . . . . . . . . . . . . . . 10

3.2.4 Mac OS X . . . . . . . . . . . . . . . . . . . . . . . . 11

ii CONTENTS

4 Controls and Functions 13

4.1 Front panel controls . . . . . . . . . . . . . . . . . . . . . . 13

4.2 Rear panel controls . . . . . . . . . . . . . . . . . . . . . . . 14

5 Appendix I: Technical Data 17

5.1 Digital I/O Connector . . . . . . . . . . . . . . . . . . . . . 17

5.2 Digital In Connector . . . . . . . . . . . . . . . . . . . . . . 18

5.3 Digital Out Connector . . . . . . . . . . . . . . . . . . . . . 18

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1. Description of the Hardware

The Lih 1600 is a high resolution, low-noise scientific data acquisitionsystem. It utilizes the newest fiber optic and digital signal processing tech-nologies, in addition to many of the exceptional features of its predecessorthe ITC-16. The Lih 1600 provides expandability and versatility that willsatisfy both current and future needs.

The Lih 1600 system comprises of a PCI computer interface card and oneor two analog rack units connected by the fiber optic data cables. The fiberoptics provide superb optical isolation, virtually eliminating ground loops,while increasing the distance between the computer and the recording set-up to at least five meters. Fiber optic cables are small, flexible, and, unlikeconventional electrical cables do not emit Electro-magnetic radiation.

The Lih 1600 rack unit has eight analog inputs, four analog outputs, six-teen digital inputs and sixteen digital output channels all sampling syn-chronously. In addition, two 12-bit asynchronous “telegraphing” ADCchannels are available for monitoring slow changing parameters.

The eight analog input channels are separated into two banks of four. Eachbank is multiplexed into one 16-bit 200 kHz A/D converter. Both A/D con-verters sample simultaneously and synchronously at the maximum conver-sion rate resulting in a total throughput of 400 kHz. This unique arrange-ment allows pairs of channels to be digitized without phase-shift. If thebandwidth of the experiment calls for lower sampling rates, the DSP (dig-ital signal processor) decimates and/or filters the data. An added benefitof filtering is the reduction of noise.

The PCI Bus mastering host interface card supports one or two Lih 1600rack units. If two rack units are used, then all input and output channels aredoubled and fully synchronized. For systems requiring even more channels,multiple PCI and Lih 1600 units are used. Multiple PCI cards installedin the same or in separate computers can be synchronized.

2 Description of the Hardware

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2. Technical Specifications

2.1 Analog Inputs

� Eight 16-bit analog inputs

� Two A/D converters, each multiplexed into 4 inputs

� 400 kHz aggregate, 200 kHz per ADC

� Input type: differential, optically isolated

� Input Range: -10.24 to + 10.23 V

� Differential non-linearity: 0.002% of FSR

� Drift: ±2 ppm/C

� Input impedance: 1 MOhm

� Signal to noise ratio: 86 dB at DC to 160 kHz, <1 mV PP

2.2 “Telegraphing” Inputs

� Two 12-bit telegraphing inputs

� 5 kHz aggregate

� ±10 V input range

2.3 Digital Inputs

� Sixteen optically isolated inputs

4 Technical Specifications

� 3.3 and 5 V logic compatible

� Minimum pulse width: 150 ns

2.4 Trigger Inputs

� Four optically isolated inputs

� 3.3. and 5 V logic compatible

� BNC on front panel

2.5 Analog Outputs

� Four 16-bit analog outputs

� Four individual DA converters

� Output type: pseudo differential, optically isolated

� Settling time: <4 s

� Output Range: -10.24 to +10.23 V

� Gain error: 0.2 % of FSR

� Gain linearity: <2 dB Drift: ±4 ppm/C

� Output Impedance: 10 Ohm

� Signal to noise ratio: 116 dB

2.6 Digital Outputs

� Sixteen optically isolated outputs

� Rear panel connector

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2.7 Connectors 5

� Sink output current: 6.4 mA (front panel), 3.2 mA (rear panel)

� 4 BNC connector on front panel

� 3.3 V and TTL compatible

2.7 Connectors

� Connector for EPC 8 or TIB 14

� 2 pairs of fiber optic transmitters/receivers

� Auxiliary digital output for optional expansion panel and for syn-chronization of multiple PCI interfaces

2.8 Dimensions

� 475 x 44 x 250 mm

� Weight: 3.6 kg

2.9 Cable

� 1 pair of 5 meter fiber optic cable for each Lih 1600

2.10 Warranty

� One year parts and labor

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6 Technical Specifications

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3. Installation

3.1 Connecting the Lih 1600

When you receive the Lih 1600, please check the packing list to verify thatyou have all required parts, especially:

1. The Lih 1600 itself

2. The PCI-1600 computer interface card:

3. Two fiber optics cables which will connect the Lih 1600 to the com-puter interface card.

First, shut down the computer, open it, and insert the computer interfacecard (PCI-1600) in a free, matching slot. If there is more than one free slot,place the card away from other cards radiating heat. Close the computer.

Insert the fiber optics cable into the connectors on the card you just in-serted. Connect the other end of the cables into the connector labelled “ToPCI-1600” at the rear of the Lih 1600.

Figure 3.1: Connectors for optical cables

The Lih 1600 offers the convenience that two interfaces can be connectedto and controlled by a single PCI board in the computer. All input andoutput channels of the two interfaces are fully synchronized. Consequently,one can connect two Lih 1600 interfaces to one PCI interface card. Thenew Patchmaster software automatically detects both interfaces.

8 Installation

Color coding for connecting the Lih 1600 to the LIH-1600 computer inter-face board:Primary interface: LIH 1600 PCI-1600

Red RedBlue Blue

Secondary interface: LIH 1600 PCI-1600Red YellowBlue Green

Now connect the power cord to the Lih 1600 and connect it to the powerline.

The Lih 1600 is now wired up, and you can proceed to the software in-stallation as described in the following section.

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3.2 Software Installation 9

3.2 Software Installation

3.2.1 Windows NT 4.0, Windows 2000, and Win-dows XP

In case of a Windows 2000 or Windows XP computer, the plug-and-play system will automatically detect the PCI-1600 board and ask foran appropriate driver. Insert the HEKA CD into the CD-ROM drive ofyour computer and go to the folder “Install\ITC Drivers”. Load the fileInstruTECH.inf and then follow the instructions of the software. Finally,you should get the message, that the driver was successfully installed.

On Windows NT computers, the new hardware is not detected automati-cally. Please insert the HEKA CD and wait until the HEKA Installationprogram comes up. Switch to the [Tools & Drivers] section and thenclick on the ITC Drivers icon. Follow the instructions of the software.

If the HEKA installation program should not start automatically, run thedriver installation software (setup.exe) in the folder “Install\ITC Drivers”from the HEKA CD.

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10 Installation

To be able to use our software (Patchmaster, Pulse, TIDA) a softwareprotection key (Dongle) is required. Please insert the Rainbow protectionkey (labelled “SENTINEL SuperPro”) in the parallel printer port of yourcomputer (“LPT1” or “LPT2”). If you have a local printer connected toyour computer attach the key between the parallel port and the printercable. To install the protection key driver use the Dongle Driver icon inthe Tools & Drivers section of the HEKA installation program or openthe folder “Install → Rainbow” and proceed run setup.exe.

Important note: Windows does not allow you to install adriver, if you do not have administrative rights. Make sure tologin as “Administrator” before performing any driver installa-tion!

Now, you can install and run the acquisition software (Patchmaster,Pulse, or TIDA).

3.2.2 Windows 98

In case of a Windows 98 computer, the plug-and-play system will auto-matically detect the PCI-1600 board and ask for an appropriate driver.Insert the HEKA CD into the CD-ROM drive of your computer and goto the folder “Install\ITC Drivers”. Load the file “InstruTECH.inf” andthen follow the instructions of the software. Finally, you should get themessage, that the driver was successfully installed.

3.2.3 MacOS 9.x

Please open the “Installers” folder from the HEKA installation screen andrun the Patchmaster or Pulse installer. The driver for the hardware pro-tection key (“dongle”) is automatically installed with the software. Patch-master users should make sure, that the Carbon.lib on the computer isv1.6 or higher (information on the installed Carbon.lib can be found inthe Apple System Profiler). We tested the program using CarbonLibversion 1.6, dated 16-Dec-2002. That file can be freely downloaded fromApple’s web site.

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3.2 Software Installation 11

3.2.4 Mac OS X

On the MacOS X operating systems, drivers for the hardware pro-tection key (“dongle”) and for the Lih 1600 need to be in-stalled. The installer for the Lih 1600 interface can be found inthe Driver Installers/Drivers MacOSX/Installer for ITC driversfolder. Please double-click on the installer icon to run the program.

The dongle driver is installed by copying the “Eve3.framwork” (in theRainbow drivers folder) into the /Library/Frameworks folder on yourcomputer.

Finally copy the “HEKA” folder and its content to your hard disk andre-boot your computer.

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12 Installation

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4. Controls and Functions

4.1 Front panel controls

1. Power Indicator: The power indicator will be illuminated whenthe Lih 1600 is switched on and connected to the power line.

2. Chassis Ground Connector: A 4 mm banana receptacle providesconnection to the chassis ground of the Lih 16000 interface.

3. DAC Ouputs: Four BNC connectors provide access to the fourindividual 16-bit digital to analog converter outputs. The acquisitionsoftware controls the digital to analog converter voltages and timings.The DAC channels have an output range of ±10.24 volts. Thesechannels are optically isolated from the computer.

4. ADC Inputs: Eight BNC connectors provide access to the 16-bitanalog to digital converter input channels. The eight analog inputchannels are separated into two banks of four. Each bank is mul-tiplexed into one 16-bit 200 kHz A/D converter. The acquisitionsoftware controls analog to digital converter channel selection andsampling interval timing. The ADC channels have an input range of

14 Controls and Functions

10.24 volts. These channels are optically isolated from the computer.Make sure that the cables that are used to connect to these chan-nels have a very good shield, and that it is continuous to both endsof the cable. The shield of the BNC connector must have a refer-ence connected to it. If the BNC connector shield is left unconnectedun-expected results can occur.

Important note: Do not under any circumstances exceedthe maximum input allowed voltage of 15 volts peak.

5. Trigger Inputs: Four BNC connectors provide access to the fourfast trigger input channels. These digital input channels accept stan-dard TTL levels (5 volts and 0 volts).

Please note: At the moment, the acquisition software supports onlythe first trigger input (IN-0).

6. Trigger Outputs: Four BNC connectors provide access to four outof the sixteen digital output channels. The acquisition software con-trols the state of the digital output channels. These digital channelsoutput standard TTL levels (5 volts and 0 volts). These channels areoptically isolated from the computer.

4.2 Rear panel controls

1. Power Switch: If the power is switched on, the green LED at thefront panel should be illuminated.

2. Power Connector: Accepts standard three wire IEC female typepower cords. The appropriate power cord has been provided withthe Lih 1600. The Lih 1600 will function with a line voltage of 100volts AC to 120 volts AC or 200 volts AC to 240 volts AC.

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4.2 Rear panel controls 15

3. Fuse: Replace fuse with 20 mm type F2A fuse only

4. Digital Out Connector: The Lih 1600 interface provides sixteendigital output lines. Four out of the sixteen output channels arebrought out on the front panel (Out-0 to Out-3). All of the digitalchannels are available on this connector. The state of the digital linescan be set from the acquisition software.

5. Digital In Connector: The Lih 1600 interface provides sixteendigital input lines. All of the digital channels are available on thisconnector. The state of the digital lines can be read from the acqui-sition software.

6. Computer Connector: Connection to the PCI host interface card.The fiber optics provide superb optical isolation, virtually eliminatingground loops, while increasing the distance between the computer andthe recording set-up to at least five meters. Fiber optic cables aresmall, flexible, and, unlike conventional electrical cables do not emitelectro-magnetic radiation.

7. Telegraphing Input: Two 12-bit asynchronous “telegraphing”ADC channels can be used for monitoring slow changing parameters.If a so called “telegraphing” amplifier is connected to the Lih 1600,these inputs can be used to determine the encoded amplifier gain andfilter bandwidth settings.

8. Digital I/O Connector: In this connector the digital output linesof the Digital Out connector and the digital input lines of theDigital In connector are brought together. This connector can beused to control other HEKA devices, such as the Epc 8 patch clampamplifier or the Tib 14 trigger interface.

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16 Controls and Functions

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5. Appendix I: Technical Data

5.1 Digital I/O Connector

The digital IN and OUT lines of this connector carry TTL-compatiblesignals. The connector is intended to connect other HEKA devices, such asEpc 8 or Tib 14 to the Epc 10 amplifier. For other purposes the DigitalIn connector and the Digital Out connector should be used.

PIN 1 of the 40-pin connector is labelled with a small arrow:

Figure 5.1: Digital I/O connector

18 Appendix I: Technical Data

Figure 5.2: Digital I/O connector

5.2 Digital In Connector

The Digital In connector at the rear panel can be used to read TTL triggersignals from external devices.

Figure 5.3: Digital In connector

5.3 Digital Out Connector

The Digital Out connector at the rear panel of the EPC 10 amplifiers can beused to trigger external devices, which require TTL inputs. The signals ofpin 21 (OUT-0) to 23 (OUT-2) can also be accessed from the BNC trigger

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5.3 Digital Out Connector 19

outputs at the front panel of the amplifier.

Figure 5.4: Digital Out connector

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